ZINSCO QCAL-60L U 60A 240V 2-pole Molded Case Circuit Breaker QCAL60L

Description:

The Zinsco QCAL-60L U is a 60 Amp, 2-pole molded case circuit breaker designed for use in Zinsco / GTE Sylvania load centers. It operates on 240V systems and utilizes a thermal-magnetic trip mechanism to provide protection against overloads and short circuits. This breaker is part of the QCAL (QC/QCAL series) and features a plug-in (snap-in) mounting style. The “L” designation typically indicates a lug-type terminal configuration, meaning it is equipped with load-side lugs for direct conductor termination rather than standard clip-only connections.

Applications:

The Zinsco QCAL-60L breaker is commonly used in residential and light commercial electrical systems for 240V circuits requiring 60A protection, such as HVAC systems, subpanels, electric ranges, and large appliance loads. The lug-type configuration makes it suitable for applications where direct wire termination is needed, such as feeder connections or dedicated circuits. It is installed in legacy Zinsco panels and is primarily used today for maintenance or replacement of existing systems.

Technical Specifications:

• Manufacturer: Zinsco / GTE Sylvania / Thomas & Betts
• Model / Part Number: QCAL-60L U
• Product Type: Molded Case Circuit Breaker (Lug Type)
• Poles: 2-Pole
• Current Rating: 60 Amps
• Voltage Rating: 240 VAC
• Mounting: Plug-in / Snap-in (QCAL series)
• Trip Type: Thermal-magnetic
• Interrupt Rating: ~10 kAIC @ 240V
• Special Feature: Lug terminals for direct conductor connection
• Phase: Single-phase
• Function: Overcurrent and short circuit protection
• Status: Obsolete / discontinued (surplus or refurbished availability)

Common Replacements:

• Connecticut Electric UBIZ260 2-Pole 60A Zinsco Replacement Breaker
• Siemens Q260 2-Pole 60A Circuit Breaker
• Square D QO260 / HOM260 2-Pole 60A Circuit Breaker